Experience of nurses using the COVID-19 Early Warning Score in the care of COVID-19 patients: A qualitative study

Background: In all phases of the COVID-19 disease, patients are at risk of acute deterioration. In order to identify patients at risk at an early stage, the COVID-19-EWS Salzburg was implemented in April 2020 at the University Hospital Salzburg. So far, the applicability, practicability and relevance of the EWS for acute inpatient COVID-19 care are unknown. Aim: The aim of this qualitative study was to describe the relevance and practicability of the COVID-19-EWS Salzburg as a risk assessment tool for acute inpatient COVID-19 care, based on the experiences of the nursing staff. Methods: Nine semi-structured expert interviews were conducted with the nursing staff of the COVID-19 acute care unit. The data were analysed by qualitative content analysis. Results: Nurses described the EWS as relevant to practice because the score facilitates decision-making, increases patient safety, and enhances interprofessional communication. Both the Early Warning Score (EWS) and experience in caring for COVID-19 patients were found to be relevant for decision-making in the context of managing clinical deterioration. The score provided a sense of security in the care of COVID-19 patients, particularly to new and inexperienced nurses. Conclusion: The participating nurses describe the COVID-19-EWS Salzburg as a useful and practical risk assessment instrument, complementing clinical judgment. A need for adaptation concerning the parameters oxygen saturation and oxygen requirement was identified.